Waffle iron



FIG. 1 is a top left-hand perspective view of a waffle iron showing my new design;

FIG. 2 is a left-hand side elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a right-hand side elevational view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a front elevational view thereof; and

FIG. 7 is a rear elevational view thereof. 

The ornamental design for a waffle iron, as shown and described. 